MARINA DEL REY, Calif. ? A 16-year-old Southern California girl hoping to become the youngest person to sail around the world alone has ended her quest and will head to South Africa for boat repairs.

Abby Sunderland wrote on her blog Saturday that it would be "foolish and irresponsible" to keep going after losing use of her boat's main autopilot. She expects to land in Cape Town in about two weeks.

Even with her nonstop attempt over, Sunderland writes she will complete her trek back to Marina del Rey.

Sunderland, of Thousand Oaks, embarked Jan. 23 after older brother Zac completed a westerly solo circumnavigation at the age of 17.

The record for the youngest person to circumnavigate is held by 17-year-old Mike Perham of Britain.